High Surge Current Varistors Design Guidefor Automotive AUMOV Varistor & LV UltraMOV Varistor Series Specifications descriptions and illustrative material in this literature are as accurate as known at the time of publication, but are subject to changes without notice. Visit littelfuse.com for more information. 2015 Littelfuse, Inc. Table of Contents Page About the AUMOV Varistor Series 2 About the LV UltraMOV Series Varistor 4 Varistor Basic 5 Terminology Used in Varistor Specifications 6 Automotive MOV Background and Application Examples 7 LV UltraMOV Varistor Application Examples 10 How to Select a Low Voltage DC MOV 12 Transient Suppression Techniques 15 Introduction to Metal Oxide Varistors (MOVs) 17 Series and Parallel Operation of Varistors 18 AUMOV Varistor Series Specifications and Part Number Cross-References 20 LV UltraMOV Series Specifications and Part Number Cross-References 22 Legal Disclaimers 26